Note 12 - Schedule of Derivative Designated as Fair Value Hedging Instruments of Statements on Income (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Derivative [Line Items]
Total	$ 20,345	$ 15,865	$ 39,914	$ 31,328
Designated as Hedging Instrument [Member]
Derivative [Line Items]
Total	1,351	180	2,578	180
Designated as Hedging Instrument [Member] | State and Municipal Securities [Member]
Derivative [Line Items]
Recognized on fair value hedge	1,000	190	2,010	190
Recognized on hedge portfolio	(661)	(134)	(1,329)	(134)
Recognized on remeasurement of fair value hedge	8	(14)	(10)	(14)
Designated as Hedging Instrument [Member] | U.S. Government agencies and GSE mortgage backed securities
Derivative [Line Items]
Recognized on fair value hedge	2,999	569	5,995	569
Recognized on hedge portfolio	(2,039)	(407)	(4,076)	(407)
Recognized on remeasurement of fair value hedge	$ 44	$ (24)	$ (12)	$ (24)